BOSS Audio CX15 Chaos Exxtreme 15-inch 1000-watt SINGLE Voice Coil Subwoofer Subwoofer Size: 15"""" Subwoofer Type: Stand Alone Total Power Output: 1000 Watts RMS Power: 500 Watts @ 4 Ohms Frequency Response: : 25 Hz to 2000 KHz Voice Coil Size: 2.5 Voice Coil Structure: SINGLE Voice Coil Material: Aluminum Cone Material: Poly Injection Free Air Resonance (FS): 27 Hz Total Q (QTS): 1.23 Electrical Q: 1.4 Mechanical Q: 9.43 Surround Material: Foam Basket Structure: Stamped Magnet Cover: NO Box Type: Sealed Only Mounting Depth: 6"" Sealed Enclosure: Small = 2 CuFt; Large = CuFt Mounting Hole Diameter: 7"" Dimensions (H x L x W): : 6.88"" x 15.38"" x 15.38"" 15-inch subwoofer with 1000 watts maximum power handling 4-Ohm impedance Poly injection cone Frequency Response: 25Hz - 2kHz Mounting Depth: 6 Inches